<template>
  <el-dialog title="课程视频上传" :visible.sync="visible" width="30%" :before-close="handleClose" style="text-align: left">
    <el-upload
      class="upload-demo"
      action="https://jsonplaceholder.typicode.com/posts/"
      :on-preview="handlePreview"
      :before-upload="beforeAvatarUpload"
      :on-remove="handleRemove"
      :before-remove="beforeRemove"
      multiple
      :limit="1"
      :on-exceed="handleExceed"
      :file-list="fileList">
      <el-button size="small" type="primary">点击上传</el-button>
      <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div>
    </el-upload>

  </el-dialog>
</template>

<script>
export default {
  name: "VideoModel",
  props: {
    visible: {
      type: Boolean,
      default: false
    },
    gridData: {
      type: Array,
      default: () => {
      }
    },
  },
  data(){
    return{
      fileList: [{name: 'food.jpeg', url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100'}, {name: 'food2.jpeg', url: 'https://fuss10.elemecdn.com/3/63/4e7f3a15429bfda99bce42a18cdd1jpeg.jpeg?imageMogr2/thumbnail/360x360/format/webp/quality/100'}]
    }
  },
  methods: {
    handleClose(done) {
      this.$emit('close-callback')
    },
    handleRemove(file, fileList) {
      console.log(file, fileList);
    },
    handlePreview(file) {
      console.log(file);
    },
    handleExceed(files, fileList) {
      this.$message.warning(`当前限制选择 1 个文件，本次选择了 ${files.length} 个文件，共选择了 ${files.length + fileList.length} 个文件`);
    },
    beforeRemove(file, fileList) {
      return this.$confirm(`确定移除 ${ file.name }？`);
    },
    beforeAvatarUpload(file) {
      const isJPG = file.type === 'image/jpeg';
      const isLt2M = file.size / 1024 / 1024 < 2;

      if (!isJPG) {
        this.$message.error('文件格式只能是 JPG 格式!');
      }
      if (!isLt2M) {
        this.$message.error('文件大小不能超过 2MB!');
      }
      return isJPG && isLt2M;
    }
  }
}
</script>

<style>
</style>
